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Online measurement of unattached and total radon and thoron decay products.

Appl. Radiat. Isot. 67, 843-848 (2009)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Radon and thoron decay products appear in two size modes: unattached and attached to aerosol particles. They deposit at different regions of the human respiratory tract causing different inhalation doses. A separate measurement of the concentration of both modes is realized by a new device based on a working level monitor and screen sampling. In addition, a new operation and evaluation procedure of the working level monitor is described to identify the thoron decay products (212)Pb and (212)Bi separately. First measurements reveal consistent results. The developments in measurement technique will enhance radon and thoron dose assessment.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Radon decay products; Thoron decay products; Working level monitor; Pb-212; Bi-212; indoor; air; fraction
ISSN (print) / ISBN 0969-8043
e-ISSN 1872-9800
Quellenangaben Volume: 67, Issue: 5, Pages: 843-848 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place Oxford
Non-patent literature Publications
Reviewing status Peer reviewed